Brake-shoe.



C. xNA BLUE.

BRAKE SHOi APPLICATION m21) Amy/:2, :13A

,aemzed Sept. l, 1915 carmen" Wrrnnas nnen-or Monacor/raar, atacar/in, nssrenon. 'ro @Tanner a ooarnnr, or MONTGOMERY, arenaria BRAKE-SHOE mma-a.

Specication of Letters Patent.

Application led .april 22., 1913. Serial No. ERBQ.

To all whom t may concern:

Be it known that I, CHILTON llrrrnns BLUE, a citizen of the United States, and a resident of Montgomery, in the county oi Montgomeryand State of Alabama, have invented an lmprm/einent in- BrakeShoes, of which the following,f is a specification.

My invention is an improvement .in that 'type of brake-shoes for` railway rollingstock in which a body or Wear portion is cast upon a comparatively thin back formed of steel, or other Wrought metal, and serving as a reinforce for the body.

My invention is embodied in the particular construction of the reinforce and its connection with the wear block or brake shoe in such manner that it cannot become disconnected from the latter.

n the accompanying drawing Figure l is a perspective view of the shoe Fig. a perspective view of the back jefreini'orce, together with a Wrought-metal staple used to reinforce 'the back lug with which brake shoes are commonly provided. Fig. 3 is a transverse section on the line 3-3 of Fig. l. Fig. bis a cross section on the line of Fig. "l,

rhe numeral l indicates the cast-iron body of the shoe, 2 the steel back or reinforce therefor, and 3 a Wrought 4iron U-shaped device, or staple, that serves as a reinforce.

for the perforated lug which is usually cast on the back of the body of a brake-shoe, and which serves, for attachment of the latter to a. cross-bar or other support. The straight parallel legs the device 3 are provided with latera? projections in the nature of teeth, which assist in holding the device firmly connected With the cast metal ody.

The reinforce 2 is a moderately thin, steel plate having its side edges bent inward and each provided With a series of recesses 4 and intervening dove-tailed hooks, orv claws, 5. Ilhe said recesses and hooks are formed in those portions of the reinforce which inten vene the ends and the middle of the plate.

' body v through the nconsequence oit the inward or downward bend of the hooks thus formed, they are completely embedded inthe bloclr or shoe l, as shown in Fig. i, and experience -has demonstrated that the reinforce cannot be detached from the block, Which sometimes occurs in cases Where the reinforce is flat and is partly embedded in the top or face of the block or shoe. The middle portion is provided with elongated slots 6A arranged parallel to the side edges .3a. This middle slotted portion of the reinforce is thus leit the full Width of the plate, so that the reinforce is 'not weakened at that point, as `usual in other brakeshocs of this type. The hooks or claws 5 are Widest at their outer ends, thus 'forming sharp lateral cctions, as shown in Fig. 2. The corners of the claws thus approach each otlill, so that the distance between them is less than the widthA of the recesses ii in the direction of the length of the reinforce. lt is apparent that when the latter is cast in the block or body oi' the shoe, as shown. in Fig. l, the hooks or claws 5 project down into the body and the cast .metal fills the space between them, or, in other Words, lills the recesses Il. ille reinorcev is thus made practically one with the body, its outer side or bach` being' flush with the body in`which the claws vand re cesses are buried. it is obvious thatthe ree inorce cannot be separated from the body, sc that they form practically onepiece or block. The side edges 5a of, the middle por.- tion' of the reinforce are embedded in the l to the depth or the thickness of the plate.

The legs of the reinforcing staple 3 pass slots 6 in the middle portion of the reinforce 2; and are held in the position indicated in Fig. 3 Whenthe body is cast. The legs of thestaple. are provided with lateral projections, as shown in Fig. l, or fiattened and broadened, 'which eectnally prevent Withdrawal of the device from the body l. The bowed outer endV ci' the reinforce 3 projects far enough from the body which provides for attachment, to e support fwn -oz' the. brake-shoe.

The im roved brakeshoe comprising a cest metal b 'y and @thin Wrought metal rein forcing plate rtly embedded` in seid body end ush witxfthe beek of the seme, the

said piste having its side edges formed with the dove-tail hooks which are curved inward 10 and downward, and embedded in the cast metal as described.

CHILTON WITHERS BLUE. Witnesses:

N. B. HOLT, J. L. GRIFFIN. 

